CN104956159A - Absorber and retaining device for absorber tubes - Google Patents
Absorber and retaining device for absorber tubes Download PDFInfo
- Publication number
- CN104956159A CN104956159A CN201480006474.5A CN201480006474A CN104956159A CN 104956159 A CN104956159 A CN 104956159A CN 201480006474 A CN201480006474 A CN 201480006474A CN 104956159 A CN104956159 A CN 104956159A
- Authority
- CN
- China
- Prior art keywords
- thermal radiation
- pipe clamp
- metal tube
- holding device
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
- F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
- F24S2025/6003—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules by clamping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Insulation (AREA)
- Supports For Pipes And Cables (AREA)
- Exhaust Silencers (AREA)
- Clamps And Clips (AREA)
- Control Of Resistance Heating (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
The invention relates to a retaining device (30) for absorber tubes (10) which have a metal tube (12) and a glass cladding tube (16). The retaining device (30) comprises a tube clamp (40) made of two tube clamp halves (42a, b) which have a main part (43) with retaining means (44). The tube clamp (40) surrounds the metal tube (12) in the mounted state, and the retaining means (44) rest against the exterior of the metal tube (12). A thermal radiation shield (60) is arranged on the interior of the main part (43) of the tube clamp (40) in order to reduce the loss of heat at the ends of the metal tubes of the absorber tube (10).
Description
Technical field
The present invention relates to a kind of according to claim 1 holding device for endothermic tube as described in the preamble.The invention still further relates to a kind of system be made up of endothermic tube and holding device.
Background technology
Parabolic trough collector in solar energy thermal-power-generating factory has the parabola curved mirror of the length that can extend beyond hundreds of rice.Endothermic tube is arranged in the focal line of these paraboloidal mirrors, and it has metal tube and sleeve pipe.Such as from DE10231467 B4, such endothermic tube is known.
In order to reach required length, need connected to each other for multiple endothermic tube.For this reason, metal tube is welded to one another together.Holding device is arranged in each joint, and it is fastened to the supporting construction of parabolic trough collector on the one hand, and engages with endothermic tube on the other hand.
Known such holding device from WO 2010/142666 A2, it has from the outward extending bar in the inside of paraboloidal mirror or support, and end is furnished with pipe clamp metal tube being clipped in its joint thereon.This pipe clamp has by two of the sheet metal be spaced apart from each other outward extending main bodys made, at described main body place, two pipe clamp half portion by hook-shaped hinge arrangement, to move in unseparated situation.Bolt connection piece is positioned at the free end of pipe clamp half portion.Protuberance against metal tube is arranged on the inner side of pipe clamp half portion.These point-like are against the advantage of support member, can reduce the thermal loss caused by heat transfer.But, although have this measure, still excessive at the thermal loss of the joint of metal tube.
Be used previously the heatshield material of such as insulating materials form, to reduce the thermal loss at the open area place at endothermic tube.But, the shortcoming of installing banding pattern insulating materials before installing retaining clip is, can not guarantee that the power between retaining clip and endothermic tube coordinates, and have following risk: due to the tracing movement of heat collector and the lengthwise movement due to the insulating materials caused by the thermal expansion of endothermic tube, described insulating materials is extruded and leaves its initial position and the power cooperation no longer with retaining clip.In addition, when insulating materials is subject to the infiltration of moisture with remaining unchanged for a long period of time,---such as in long boisterous process---etching problem can be caused in the commissure be positioned under insulating materials of metal tube.
Such insulating materials has the reflectivity being significantly less than 0.5 usually, particularly for being be greater than the application in the infrared region of 3 microns at wavelength.Reflectivity is interpreted as the ratio referring to reflected intensity and incident intensity.
From the known a kind of solar thermal collector of EP 1 690 047 B1, wherein, in the joint of two endothermic tubes, arrangement length is the radiation shield element of L, arranges the mirror collar in its end.The radius of curvature of radiation shield element is greater than glass bushing, and the whole free spaces between two sleeve pipes covering endothermic tube.Due to the larger distance between radiation shield element and metal tube, the shortcoming of this layout is, occurs a large amount of heat radiation to the front side assembly, such as glass-metal transition element of endothermic tube, and be heated from metal tube.
Summary of the invention
Therefore, the object of the invention is the shortcoming overcoming prior art, a step of going forward side by side is reduced in the thermal radiation loss of the end of the metal tube of endothermic tube.
This object realized by the holding device described in feature according to claim 1.
Provide, thermal radiation is disposed in the inner side of the main body of pipe clamp, and the reflectivity of described thermal radiation in the whole wave-length coverage of 0.5 micron to 30 microns is 0.5-1.0.
The electromagnetic radiation that the radiation of heat or heat radiation are launched due to its temperature for metal tube.Thermal radiation can prevent heat radiation to be transmitted in the surrounding of endothermic tube by metal tube, because heat radiation is reflected back metal tube by hot radiant element.
Thermal radiation at the reflectivity of the wave-length coverage of 0.5 micron to 30 microns preferably in the scope of 0.7-1.00, more preferably in the scope of 0.8-1.00.
Described reflectivity is preferably applicable to the whole wave-length coverage of 1.0 microns to 30 microns, more preferably the whole wave-length coverage of 2.0 microns to 30 microns.
The advantage that thermal radiation is arranged in pipe clamp place is, thermal radiation can be pre-installed in pipe clamp place, thus simplifies installation on the whole.
The inner side of the main body of pipe clamp is interpreted as the side of the metal tube towards endothermic tube.
By means of thermal radiation, significantly reduce the thermal loss at the tube end place at metal tube.In higher operating temperature, such as use fused salt as under the operating temperature of heat transfer medium, enhance this effect.In this process, the operating temperature for subsequent use of 200 DEG C to 300 DEG C and the maximum operation temperature up to 550 DEG C are all significantly higher than current equipment, operate in the apparatus and reach the operating temperature for subsequent use of 80 DEG C to 120 DEG C and the maximum operation temperature of 350 DEG C to 400 DEG C using oil as heat transfer medium.Compared with not there is the holding device of thermal radiation, by thermal radiation according to the present invention, thermal loss can be reduced up to 20%.
Thermal radiation is preferably made up of stainless steel or aluminum or aluminum alloy.
In order to improve reflectivity, particularly be increased to the value being greater than 0.8, reflectance coating is preferred.Coating is preferably made up of aluminium, copper or silver or is made up of aluminium, copper or silver alloy.
The heat of radiation is away from pipe clamp, so that the latter is weaker heated.Therefore the selection of pipe clamp material can not rely on its hot property to a great extent.
Because thermal radiation is arranged in the vicinity of metal tube, less heat is dispersed into the outer structural element of endothermic tube.Result, the temperature difference in the transitional region such as between expansion compensation device and glass bushing and thermally induced stress thus can be reduced, described expansion compensation device can be such as metal bellows, and thus reduces the risk of glass-metal transition element fracture.Thermal radiation is arranged in the vicinity of metal tube to be got rid of thermal radiation and contacts with any of metal tube.Therefore, thermal radiation is preferred relative to the isolated layout of metal tube.
Preferably, thermal radiation extends beyond at least 50% of the inner periphery of pipe clamp.Inner periphery refers to the inner side of the main body of described folder.When the surface area towards parabolic troughs of metal tube is shielded with it, the coverage rate of the inner periphery of 50% can be enough.
The side specific surface towards parabolic troughs of endothermic tube, to the side heating more strongly of the sun, therefore also launches more heat.Therefore, when being covered towards the side of parabolic troughs by thermal radiation, achieved the remarkable reduction of thermal loss.
Preferably, thermal radiation extends beyond the whole inner periphery of pipe clamp, because thermal loss can minimize thus even more significantly.
Preferably, the width B of thermal radiation
sbe greater than the B of the width of pipe clamp
r.Due to the larger width of thermal radiation, described pipe clamp is better shielded away from heat radiation.In addition, when the width increased, thermal loss is reduced.
Thermal radiation preferably covering metal pipe whole free space, namely not by the region of glass bushing vacuum insulation.
Thermal radiation preferably has one piece design or multi-piece design.Such as, thermal radiation can be made up of one or more bonding jumper.Compared to one-piece embodiment, the multi-piece design of thermal radiation has the advantage more easily can installing thermal radiation.
Thermal radiation can have Multi-layer design or can be made up of multilayer material, to strengthen heat shielding effects.
For this reason, the multilayer of such as film or paper tinsel, such as aluminium foil arranges it is applicable.
Preferably, thermal radiation is arranged in the main body a distance relative to pipe clamp.The advantage of this isolated layout is, except it contacts with holding member, thermal radiation does not contact with pipe clamp, makes heat transfer to occur to a great extent, therefore can minimize thermal loss.
Preferably, thermal radiation has opening, and holding member engages by described opening.
Because holding member preferably engages by opening, thermal radiation is arranged relative to the contact surface of holding member in the mode of depression, and described holding member is in the mounted state against metal tube.As a result, result in the isolated layout of thermal radiation relative to metal tube.
Preferably, holding member is also for fixing thermal radiation in position.Preferably, the size of opening is adapted to the size of holding member, makes any relative motion preventing pipe clamp and thermal radiation.
Preferably, thermal radiation is made up of at least one curved metal bar.Bonding jumper can be cut into certain size and be shaped in a large number in a straightforward manner, and a large amount of thermal radiation can be manufactured in the mode of cheapness.
Preferably, the main body of pipe clamp is made up of solid material.Preferred steel, particularly stainless steel are used as solid material.The advantage of solid material is, can manufacture highly stable main body, and then can structurally easily be connected with holding element by it.Such as, blind hole can being manufactured in the end cross of main body, then can introducing the bolt for being fastened to holding element wherein.
Preferably, the holding member of pipe clamp is contact claw.These contact claws may be molded in the main body of pipe clamp.These contact claws are preferably provided with smooth contact surface, make it possible to achieve the point-like on round metal tube or wire-shaped contact.Point-like or wire-shaped contact have the advantage that metal tube is minimized to the heat transfer in pipe clamp.
According to another embodiment, the main body of pipe clamp can manufacture in the mode of so-called skeleton structure.This refers to that pipe clamp half portion demonstrates a kind of frame design provided compared with low weight.
Preferably, the sheet metal manufacture that the main body of pipe clamp half portion is cut off by least two, described sheet metal is arranged adjacent to each other on the axis direction of pipe clamp, and is connected to each other by means of jockey.The axis of pipe clamp corresponds to the axis of metal tube.These jockeys are preferably placed in pipe clamp half portion by means of the some place be bolted together.Therefore jockey is hardware, and it preferably has boring to hold connecting bolt.
The holding member of bonding jumper blank is preferably formed by the supporting section with flat contacting surface.
Described object is also realized by a kind of layout be made up of two endothermic tubes and the holding device of the feature with claim 17.
Described system has two endothermic tubes, and each endothermic tube has metal tube and glass bushing, and metal tube is connected to each other and there is gap between adjacent glass bushing.In addition, described system comprises holding device, and it engages with the metal tube be connected in gap, and pipe clamp has main body, thermal radiation is arranged on the inner side of the main body of pipe clamp, and the reflectivity of described thermal radiation in the whole wave-length coverage of 0.5 micron to 30 microns is 0.5-1.0.
Depend on the structural design of endothermic tube, the gap between glass bushing is limited by the layout of the tightening member of the glass bushing on metal tube.
Preferably, the radius of curvature R of thermal radiation
wbe less than the radius of curvature R of glass bushing
g.Thermal radiation prevents the heat radiation of metal tube from contacting the front side member of endothermic tube and heating these parts.
Preferably, radius of curvature R
wbe greater than the radius of curvature R of metal tube
m.Radius of curvature R
wtherefore preferred at R
mand R
gbetween.Preferably, there is following relation: 1.1 × R
m≤ R
w≤ 1.3 × R
m.When the radius of curvature of thermal radiation is within the scope of this, it is arranged on metal tube as far as possible securely, but however still in a distance of distance metal tube.
Preferably, thermal radiation is arranged in a distance of distance metal tube.The advantage of this isolated layout is, heat cannot be transmitted to thermal radiation from metal tube, and the gap between metal tube and thermal radiation still keeps ventilating, and makes moisture cannot be gathered in there.
Preferably, the width B of thermal radiation
sgap between the tightening member being selected such that two glass bushings or glass bushing is bridged.The exposed end of metal tube is capped.
Preferably, thermal radiation is designed to reflecting on the side of metal tube.Also reflectance coating can be set for this reason.
Preferably, endothermic tube has the expansion compensation device of such as such as bellows between metal tube and glass bushing, and described bellows is connected on metal tube by tightening member on the one hand, and is connected on glass bushing by means of another tightening member on the other hand.In order to protect the transition of glass bushing and fastening, glass bushing has so-called glass-metal transition element.
Depend on the layout of expansion compensation device and the layout of relevant tightening member, the size in the gap between adjacent endothermic tube can be different.In addition, also there is following possibility: corresponding to the layout of described expansion compensation device, between tightening member and expansion compensation device, there is annular space, also can from annular space described in gap-contact.
When annular space to be present between metal tube and expansion compensation device or between expansion compensation device and tightening member time, thermal radiation preferably can also extend in these annular spaces of two endothermic tubes.As a result, the reduction of even better shielding and thermal radiation loss can be realized.
The various embodiments of holding device are also applicable to according to system of the present invention.
Accompanying drawing explanation
The preferred embodiments of the present invention are explained in detail below based on accompanying drawing.
In the accompanying drawings:
Fig. 1 is the perspective view of the parabolic troughs with the endothermic tube be connected to each other,
Fig. 2 is the exploded view of the joint of two endothermic tubes with holding device,
Fig. 3 is the holding device under installment state,
Fig. 4 for corresponding to through the sectional view of the planar I V-IV of the holding device shown in Fig. 3,
Fig. 5 a corresponds to the sectional view through the plane V-V of two endothermic tubes be connected to each other, and extends with the axis of outstanding thermal radiation,
Fig. 5 b corresponds to the sectional view through Fig. 5 a of another embodiment of holding device,
Fig. 6 is the exploded view of the holding device according to another embodiment,
Fig. 7-8 is another embodiment of pipe clamp, and
Fig. 9 is another embodiment of thermal radiation.
Detailed description of the invention
Shown in the perspective view of Fig. 1 is parabolic trough collector 1, and it is a part for paraboloid trough type generating equipment.Parabolic troughs 2 is formed by the paraboloidal mirror 3 be connected to each other in a large number.Parabolic troughs 2 is pivotably mounted on support bar 4, makes it possible to the tracking carrying out corresponding to position of sun.
The endothermic tube 10 with metal tube 12 and glass bushing 16 is arranged in the focal line 5 of parabolic troughs 2.Metal tube 12 is connected to each other separately at 13a, b place, its end, is particularly welded to one another (see Fig. 2).
The glass bushing 16 of endothermic tube 10 is arranged with the mode of depression two ends 13a, b relative to metal tube 12, (see Fig. 5 a, b), holding device 30 can be bonded on connecting end portion 13a, the b place of metal tube 12 wherein to make adjacent endothermic tube 10 between glass bushing 16, form gap 18.
Each holding device 30 is fastened to support component 32, and described support component 32 extends through the opening (not shown) in paraboloidal mirror 3 and is fastened to the paraboloidal mirror 3 (not shown minor structure) of below.
At its upper end, support component 32 has two holding elements 34a, b, and holding device 30 is secured to described holding element 34a, b.
Shown in the exploded view of Fig. 2 is holding device 30.For clarity sake, together with end 13a with 13b of the metal tube 12 of two endothermic tubes 10 is free of attachment to, and illustrate with relative to each other certain distance.In fig. 2, holding device 30 has pipe clamp 40, and described pipe clamp 40 is made up of two pipe clamp half portion 42a, b.Pipe clamp half portion 42a, b have main body 43 respectively, are made up in the figure that described main body 43 is shown here of solid material.
Boring 48 is arranged on the end of pipe clamp half portion 42a, b, and bolt 45 is inserted through wherein, pipe clamp half portion 42a, b to be connected together.Nut 46 is screwed on bolt 45.
In the assembled state, pipe clamp 40 engages end 13a, b of two metal tubes 12.The pipe clamp half portion 42b of bottom is fastened to two holding elements 34a, b of support component 32 in the mode be not shown specifically.
In the inner side of pipe clamp 40, namely on the side of pipe clamp 40 towards metal tube 12, holding member 44 to be arranged in main body 43 and particularly thereon shaping, by described holding member 44 pipe clamp half portion 42a, b against metal tube 12.
In addition, thermal radiation 60 is arranged in the inner side of pipe clamp 40, and described thermal radiation is made up of two thermal radiation half portion 62a, b, and it does not describe at this.
These thermal radiation half portion 62a, b are made up of half shell respectively, and described half shell is made up of metallic plate or bonding jumper.The thermal radiation half portion 62b that the thermal radiation half portion 62a on top has opening 64 and bottom has two openings 64, and holding member 44 engages through described opening.
The size of opening 64 is adapted to the size of holding member 44, makes half portion 62a, appropriate location that b is fixed on holding member 44 place.Therefore, unnecessary connection two thermal radiation half portion 62a, b, thus simplify installation.
The width B of thermal radiation half portion 62a, b
sbe greater than the width B of pipe clamp 40
r.Thermal radiation 60 extends beyond the whole inner periphery of pipe clamp 40.
Can find out in fig. 2, glass bushing 16 is arranged with the mode of depression end 13a, b relative to metal tube 12, and make to form gap 18, it can see in more detail in Fig. 5 a, b.Width B
sbe selected such that gap 18 between glass bushing 16 is capped by end 13a, b of the exposure of thermal radiation 60 bridge joint and metal tube 12.
Shown in Fig. 3 is holding device in the assembled state 40 and thermal radiation 60.Thermal radiation 60 is arranged in relative to main body 43 a distance of pipe clamp half portion 42a, b and relative to metal tube 12 a distance, make, except the contact point at flat contacting surface 47 place at holding member 44, the heat transfer from metal tube 12 to occur.
Shown in Fig. 4 be the pipe clamp 40 shown in Fig. 3 correspond to the sectional view of planar I V-IV.
Thermal radiation 60 is arranged in a distance relative to the main body 43 of pipe clamp 40 and is fixed on appropriate location by holding member 44.Holding member 44 is designed to the claw with flat contacting surface 47.Contact surface 47 is tangential to the circumference of metal tube and orientation, makes to define point-like or wire-like support 49.As a result, the heat transfer between metal tube 12 and pipe clamp 40 is minimized.
The pipe clamp half portion 42b of bottom has the blind hole 50 for two holding elements 34a, the b securing it to support component 32.
Shown in Fig. 5 a is the first embodiment of holding device 30.Fig. 5 a shows the sectional view of the plane V-V corresponding to the pipe clamp 40 shown in Fig. 3.
What be arranged in 13a, b place, end of metal tube 12 is the expansion compensation device 70 of bellows fashion, it is fastened to metal tube 12 by means of annular disk 72 and is fastened to glass-metal transition element 76 by means of tubulose tightening member 74, and described glass-metal transition element 76 is correspondingly arranged in glass bushing 16 place.
Gap 18 is limited by the distance between annular disk 72.
When thermal radiation 60 does not contact annular disk 72, the width B of thermal radiation 60
s(see Fig. 2) is corresponding to this distance.
Be reflected back by thermal radiation 60 from the heat of tube end 13a, b radiation of metal tube 12, and therefore can not lose.
Denote the radius of curvature R of metal tube 12
m, thermal radiation 60 radius of curvature R
wwith the radius of curvature R of glass bushing 16
g.
In this embodiment, thermal radiation 60 is arranged in the comparatively short distance R of distance metal tube 12
w~ 1.15 × R
mplace.
Shown in Fig. 5 b is another embodiment, and wherein, thermal radiation 60 is significantly longer apart from the distance of metal tube 12.
What produce between expansion compensation device 70 and tubulose tightening member 74 is annular space 78, and thermal radiation 60 is projected into wherein.The advantage of this embodiment is, tube end 13a, b are shielded even better, because have lap between thermal radiation 60 and annular disk 72.Annular disk 72 is arranged in below thermal radiation 60, and result can reduce thermal radiation loss further.
Shown in Fig. 6 is another embodiment of thermal radiation 60, and it is made up of the ring closed.Thermal radiation 60 has three openings 64, and holding member 44 can engage by described opening 64.Holding device 30 additionally corresponds to the holding device 30 of Fig. 3.
Shown in Fig. 7-9 is another embodiment of pipe clamp 40, and each pipe clamp half portion 42a, b have two plate-shape metal blank 54a, b cut off wherein, and it connects by means of jockey 56.Plate-shape metal blank 54a, b of each cut-out have segmental arc and extension 58.Jockey 56 is preferably arranged on the position of connecting bolt 45 to be introduced.Jockey 56 is for having the hardware of boring 48.
Plate-shape metal blank 54a, b of each cut-out have the holding member 44 of at least one straight support section form in edge 55 place within it, as in the embodiments of figure 3, which ensure that the point-like at metal tube 12 place or wire-like support 59.
Fig. 8 shows the assembled state of pipe clamp 40, arranges the thermal radiation 60 shown in perspective view of Fig. 9 within it.Thermal radiation 60 is designed to cylindric endless belt, and it has retention tab 65 at one end, and it is bonded on and keeps in opening 66.
As what illustrated according to the embodiment of Fig. 6, thermal radiation 60 has also had opening 64, and holding member 44 is bonded on wherein.Opening 64 according to Fig. 9 is arranged and is configured to slit in pairs.
Symbol list
1 parabolic trough collector
2 parabolic troughs
3 paraboloidal mirrors
4 support members
5 focal lines
10 endothermic tubes
12 metal tubes
The end of 13a, b metal tube
16 glass bushings
18 gaps
30 holding devices
32 support components
34a, b holding element
40 pipe clamps
42a, b pipe clamp half portion
43 main bodys
44 holding members
45 bolts
46 nuts
47 contact surfaces
48 borings
49 support
50 blind holes
The metal stock that 54a, b cut off
55 inward flanges
56 jockeys
58 extensions
59 support
60 thermal radiation
62a, b thermal radiation half portion
64 openings
65 keep clasp
66 keep opening
70 expansion compensation devices
72 annular disks
74 tubulose tightening members
76 glass-metal transition elements
78 annular spaces
B
sthe width of thermal radiation
B
rthe width of pipe clamp
R
mthe radius of curvature of metal tube
R
wthe radius of curvature of thermal radiation
R
gthe radius of curvature of glass bushing
Claims (25)
1. one kind for having the holding device (30) of the endothermic tube (10) of metal tube (12) and glass bushing (16),
It comprises: by two pipe clamp half portion (42a, the pipe clamp (40) b) made, described pipe clamp half portion (42a, b) has main body (43), described main body (43) has holding member (44), described pipe clamp (40) surrounds described metal tube (12) and described holding member (44) outside against described metal tube (12) in the mounted state
It is characterized in that, thermal radiation (60) is arranged on the inner side of described main body (43) of described pipe clamp (40), and has the reflectivity of 0.5-1.0 the whole wave-length coverage of 0.5 micron to 30 microns.
2. holding device according to claim 1, is characterized in that, described thermal radiation (60) is made up of stainless steel, aluminum or aluminum alloy.
3. holding device according to claim 1 and 2, is characterized in that, described thermal radiation (60) extends beyond at least 50% of the inner periphery of described pipe clamp (40).
4. the holding device (30) according to any one of claim 1-3, is characterized in that, the width B of described thermal radiation (60)
sbe greater than the width B of described pipe clamp (40)
r.
5. the holding device (30) according to any one of claim 1-4, is characterized in that, described thermal radiation (60) covers the whole free space of described metal tube (12).
6. the holding device (30) according to any one of claim 1-5, is characterized in that, described thermal radiation (60) has single type or multi-piece design.
7. the holding device (30) according to any one of claim 1-6, is characterized in that, described thermal radiation (60) has one or more layers design.
8. the holding device (30) according to any one of claim 1-7, it is characterized in that, described thermal radiation (60) is arranged in relative to described pipe clamp half portion (a distance of 42a, described main body (43) b).
9. the holding device (30) according to any one of claim 1-8, it is characterized in that, described thermal radiation (60) has opening (64), and holding member (44) engages by described opening (64).
10. the holding device (30) according to any one of claim 1-9, is characterized in that, described holding member (44) fixes described thermal radiation (60).
11. holding devices (30) according to any one of claim 1-10, it is characterized in that, described thermal radiation (60) is made up of at least one curved metal bar.
12. holding devices (30) according to any one of claim 1-11, is characterized in that, described pipe clamp half portion (be made up of solid material by 42a, described main body (43) b).
13. holding devices (30) according to any one of claim 1-12, is characterized in that, the described holding member (44) of described pipe clamp (40) is contact claw.
14. holding devices (30) according to any one of claim 1-11, is characterized in that, (42a, described main body (43) b) manufacture in the mode of skeleton structure described pipe clamp half portion.
15. holding devices according to claim 14 (30), it is characterized in that, described main body (43) is by least two bonding jumper blanks cut off (54a, b) manufacture, the bonding jumper blank of described cut-out (54a, b) disposed adjacent one another on the axis direction of described pipe clamp (40), and be connected to each other by means of jockey (56).
16. holding devices according to claim 15 (30), is characterized in that, (54a, holding member (44) b) are contact-segment for the bonding jumper blank of described cut-out.
17. 1 kinds of systems be made up of two endothermic tubes (10) and holding device (30), each described endothermic tube (10) has metal tube (12) and glass bushing (16), described two metal tubes (12) are connected to each other and there is gap (18) between adjacent described glass bushings (16), the described metal tube (12) that described holding device (30) is connected in described gap (18) also has at least one pipe clamp (40), described pipe clamp (40) has main body (43), it is characterized in that, thermal radiation (60) is arranged on the inner side of described main body (43) of described pipe clamp (40), described thermal radiation (60) has the reflectivity of 0.5-1.0 in the whole wave-length coverage of 0.5 micron to 30 microns.
18. systems according to claim 17, is characterized in that, described thermal radiation (60) has the radius of curvature R being less than described glass bushing (16)
gradius of curvature R
w.
19. systems according to claim 18, is characterized in that, described radius of curvature R
wbe greater than the radius of curvature R of described metal tube (12)
m.
20. systems according to claim 18 or 19, is characterized in that, meet following formula: 1.1 × R
m≤ R
w≤ 1.3 × R
m.
21. systems according to any one of claim 17-20, it is characterized in that, described thermal radiation (60) is arranged in a distance relative to described metal tube (12).
22. systems according to any one of claim 17-21, is characterized in that, the width B of described thermal radiation (60)
sbe selected such that the described gap (18) between two sleeve pipes (16) is bridged.
23. systems according to any one of claim 17-22, it is characterized in that, described thermal radiation (60) extends beyond at least 50% of the circumference of described pipe clamp (12).
24. systems according to any one of claim 17-23, it is characterized in that, described thermal radiation (60) at least has reflective design on the side towards described metal tube (12).
25. systems according to any one of claim 17-24, it is characterized in that, described thermal radiation (60) extends in the annular space (78) between described metal tube (12) and the expansion compensation device (70) of described endothermic tube (10) in varied situations.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013201409.0 | 2013-01-29 | ||
| DE102013201409.0A DE102013201409B3 (en) | 2013-01-29 | 2013-01-29 | Holding device for absorber tubes |
| PCT/EP2014/051587 WO2014118153A1 (en) | 2013-01-29 | 2014-01-28 | Absorber and retaining device for absorber tubes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104956159A true CN104956159A (en) | 2015-09-30 |
| CN104956159B CN104956159B (en) | 2018-09-25 |
Family
ID=50033502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480006474.5A Expired - Fee Related CN104956159B (en) | 2013-01-29 | 2014-01-28 | Heat absorption for endothermic tube and holding meanss |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US10184691B2 (en) |
| EP (1) | EP2951509B1 (en) |
| CN (1) | CN104956159B (en) |
| CY (1) | CY1119948T1 (en) |
| DE (1) | DE102013201409B3 (en) |
| ES (1) | ES2656687T3 (en) |
| IL (1) | IL239514B (en) |
| MA (1) | MA38293B1 (en) |
| PT (1) | PT2951509T (en) |
| WO (1) | WO2014118153A1 (en) |
| ZA (1) | ZA201504555B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631499A (en) * | 2017-10-08 | 2018-01-26 | 刘道灵 | A kind of solar water heater leakage-proof apparatus |
| SE542550C2 (en) * | 2018-08-13 | 2020-06-02 | Absolicon Solar Collector Ab | End seal for parabolic trough solar collectors |
| US11542969B2 (en) * | 2019-02-22 | 2023-01-03 | Ubicquia, Inc. | Pole clamp |
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| DE102007000487A1 (en) | 2007-09-12 | 2009-03-19 | Hilti Aktiengesellschaft | pipe clamp |
| US20110168161A1 (en) * | 2008-09-23 | 2011-07-14 | Rahmi Oguz Capan | Solar Trough Field System |
-
2013
- 2013-01-29 DE DE102013201409.0A patent/DE102013201409B3/en not_active Expired - Fee Related
-
2014
- 2014-01-28 WO PCT/EP2014/051587 patent/WO2014118153A1/en active Application Filing
- 2014-01-28 ES ES14702509.2T patent/ES2656687T3/en active Active
- 2014-01-28 MA MA38293A patent/MA38293B1/en unknown
- 2014-01-28 EP EP14702509.2A patent/EP2951509B1/en active Active
- 2014-01-28 CN CN201480006474.5A patent/CN104956159B/en not_active Expired - Fee Related
- 2014-01-28 PT PT147025092T patent/PT2951509T/en unknown
-
2015
- 2015-06-18 IL IL239514A patent/IL239514B/en active IP Right Grant
- 2015-06-24 ZA ZA2015/04555A patent/ZA201504555B/en unknown
- 2015-07-27 US US14/809,394 patent/US10184691B2/en not_active Expired - Fee Related
-
2017
- 2017-12-29 CY CY20171101356T patent/CY1119948T1/en unknown
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| US3113790A (en) * | 1959-04-07 | 1963-12-10 | Roy A Matthiessen | Leakage interceptor for pipe couplings |
| US5312137A (en) * | 1990-03-27 | 1994-05-17 | Ramco Manufacturing Company, Inc. | Safety shield |
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| CN102575873A (en) * | 2009-09-29 | 2012-07-11 | 肖特太阳能控股公司 | Absorber pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2951509B1 (en) | 2017-11-08 |
| CY1119948T1 (en) | 2018-12-12 |
| DE102013201409B3 (en) | 2014-07-10 |
| CN104956159B (en) | 2018-09-25 |
| US20160010894A1 (en) | 2016-01-14 |
| US10184691B2 (en) | 2019-01-22 |
| ZA201504555B (en) | 2016-11-30 |
| IL239514B (en) | 2018-07-31 |
| WO2014118153A1 (en) | 2014-08-07 |
| PT2951509T (en) | 2018-01-24 |
| ES2656687T3 (en) | 2018-02-28 |
| IL239514A0 (en) | 2015-08-31 |
| MA38293B1 (en) | 2017-10-31 |
| EP2951509A1 (en) | 2015-12-09 |
| MA38293A1 (en) | 2017-02-28 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170222 Address after: Spain Asturias Applicant after: Rioglas Solar Holdings Address before: Germany Mainz Applicant before: Schott Solar Ag |
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